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Exam 14: Statistical Process Control

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Question 1

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Seven points in succession,all increasing or decreasing in a process chart are called ________.

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process drift

Question 2

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Samples gathered in such a way that every piece of product has an equal chance of being selected for inspection are called systematic samples.

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A process capability measure of 1.00 or below indicates that the process is capable.

A measurement to determine if a defect is either present or not is known as

Concluding that a process is stable means only ________ variation is present in the process.

A measurement to determine if a defect is either present or not is known as a(n)________.

Graphs designed to signal process workers when nonrandom variation occurs in a process are called ________.

Samples gathered in such a way that every piece of product has an equal chance of being selected for inspection are called

Use the information below to answer the following question(s) . Use the "Factors for Control Limits" Table A.3 from the textbook where required: A control chart needs to be developed to determine if the temperature for a process is within control limits. Five samples each having 4 observations are taken and the sample measurements (temperature in degrees F) are noted in the table below: $\begin{array} { | l | l | l | l | l | } \hline \text { Sample } & \text { Observation } 1 & \text { Observation } 2 & \text { Observation } 3 & \text { Observation 4 } \\\hline 1 & 250 & 253.5 & 249 & 251.2 \\\hline 2 & 252 & 250.3 & 252 & 249.5 \\\hline 3 & 247.6 & 251 & 250 & 249.8 \\\hline 4 & 253.5 & 249 & 251 & 250.3 \\\hline 5 & 252 & 248.5 & 249.8 & 250.7 \\\hline\end{array}$ -What is the value of the average range R-bar?

The control chart used to measure the proportion defective is called the u chart.

Fifty sample measurements of the length of an automotive component yield a grand mean of 1.33 inches with an estimated standard deviation of 0.2 inches.The specification length is between 1.2 and 1.4 inches.Is the process capable of meeting the required specifications?

Samples gathered in such a way that every piece of product has an equal chance of being selected for inspection are called ________.

A process that is stable has no variation present in the process.

The control chart used to measure the proportion defective is called the

A continuous measurement such as weight,height,or volume is known as

The ability of a process to produce a product that meets specification is known as ________.

A continuous measurement such as weight,height,or volume is known as an attribute.

Every 10th product coming off a production line is inspected to check for quality.Such a sampling technique is called ________.

Use the information below to answer the following question(s) . Use the "Factors for Control Limits" Table A.3 from the textbook where required: A control chart needs to be developed to determine if the temperature for a process is within control limits. Five samples each having 4 observations are taken and the sample measurements (temperature in degrees F) are noted in the table below: $\begin{array} { | l | l | l | l | l | } \hline \text { Sample } & \text { Observation } 1 & \text { Observation } 2 & \text { Observation } 3 & \text { Observation 4 } \\\hline 1 & 250 & 253.5 & 249 & 251.2 \\\hline 2 & 252 & 250.3 & 252 & 249.5 \\\hline 3 & 247.6 & 251 & 250 & 249.8 \\\hline 4 & 253.5 & 249 & 251 & 250.3 \\\hline 5 & 252 & 248.5 & 249.8 & 250.7 \\\hline\end{array}$ -What is the LCL for a X-bar chart?

Variation that centers on a mean and occurs with a somewhat consistent amount of dispersion is known as ________ variation.